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The Utilisation of Solvent‐Free Synthesis for the Reaction of Cobalt with Imidazole: MOF Conversion from $^3_{\infty}$ [Co 3 (Im) 6 (ImH) 2 ] via $^3_{\infty}$ [Co 4 (Im) 8 (ImH)] to $^3_{\infty}$ [Co(Im) 2 ]
Author(s) -
MüllerBuschbaum Klaus,
Schönfeld Fabian
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100019
Subject(s) - homoleptic , cobalt , imidazole , imidazolate , chemistry , metal , redox , inorganic chemistry , medicinal chemistry , crystallography , stereochemistry , polymer chemistry , organic chemistry
The redox potential of cobalt metal proves sufficient to oxidise the metal with a melt of imidazole. Depending on the temperature of the organic melt different three‐dimensional cobalt imidazolate frameworks and hydrogen form. The initial product is $^3_{\infty}$ [Co 3 (Im) 6 (ImH) 2 ], which transforms under release of imidazole at 210 °C into $^3_{\infty}$ [Co 4 (Im) 8 (ImH)]. The latter releases the remaining imidazole at temperatures >225 °C and forms homoleptic $^3_{\infty}$ [Co(Im) 2 ], which is thermally stable up to 550 °C. Thereby, a direct reaction route starting from the metal was established that prevents the use of toxic and sensitive metallocenes.